:root{
  --teal:#00b3bd; --teal-dark:#008e97; --teal-light:#e6f7f8;
  --ink:#1b2431; --muted:#6b7787; --line:#e4e8ee; --bg:#f5f7fa;
  --card:#ffffff; --sidebar:#111a24; --sidebar-ink:#c7d2de; --sidebar-active:#00b3bd;
  --ok:#1a9d54; --warn:#c9860b; --danger:#d0433b; --info:#2b6cb0;
  --radius:10px; --shadow:0 1px 3px rgba(20,30,45,.08),0 1px 2px rgba(20,30,45,.04);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{font-family:"Segoe UI",system-ui,-apple-system,Roboto,Arial,sans-serif;
  color:var(--ink);background:var(--bg);font-size:14px;line-height:1.5}
a{color:var(--teal-dark);text-decoration:none}
a:hover{text-decoration:underline}

/* ---------- layout ---------- */
.app{display:flex;min-height:100vh}
.sidebar{width:236px;background:var(--sidebar);color:var(--sidebar-ink);
  display:flex;flex-direction:column;position:fixed;top:0;bottom:0;left:0}
.sidebar .brand{display:flex;align-items:center;gap:10px;padding:18px 18px 14px}
.sidebar .brand img{height:34px;width:auto}
.sidebar .brand .name{font-weight:700;color:#fff;font-size:16px;letter-spacing:.5px}
.sidebar .brand .sub{font-size:10px;color:var(--teal);letter-spacing:2px;text-transform:uppercase}
.nav{margin-top:8px;flex:1;overflow-y:auto}
.nav a{display:flex;align-items:center;gap:11px;padding:10px 20px;color:var(--sidebar-ink);
  font-size:13.5px;border-left:3px solid transparent}
.nav a:hover{background:rgba(255,255,255,.05);text-decoration:none;color:#fff}
.nav a.active{background:rgba(0,179,189,.12);border-left-color:var(--sidebar-active);color:#fff}
.nav a .ic{width:18px;text-align:center;opacity:.9}
.nav .section{padding:14px 20px 6px;font-size:10px;text-transform:uppercase;
  letter-spacing:1.5px;color:#5b6b7d}
.sidebar .foot{padding:14px 18px;border-top:1px solid rgba(255,255,255,.07);font-size:12px}

.main{margin-left:236px;flex:1;display:flex;flex-direction:column;min-width:0}
.topbar{height:60px;background:var(--card);border-bottom:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;padding:0 26px;position:sticky;top:0;z-index:5}
.topbar h1{font-size:18px;margin:0;font-weight:650}
.topbar .user{display:flex;align-items:center;gap:12px;font-size:13px}
.avatar{width:34px;height:34px;border-radius:50%;background:var(--teal);color:#fff;
  display:flex;align-items:center;justify-content:center;font-weight:700}
.badge-lvl{font-size:11px;background:var(--teal-light);color:var(--teal-dark);
  padding:2px 8px;border-radius:20px;font-weight:600}
.content{padding:26px;flex:1}

/* ---------- cards / stats ---------- */
.grid{display:grid;gap:18px}
.stat-grid{grid-template-columns:repeat(auto-fit,minmax(180px,1fr));margin-bottom:22px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow)}
.card .card-head{padding:14px 18px;border-bottom:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between}
.card .card-head h2{font-size:15px;margin:0;font-weight:650}
.card .card-body{padding:18px}
.stat{padding:18px 20px}
.stat .label{font-size:12px;color:var(--muted);text-transform:uppercase;letter-spacing:.5px}
.stat .value{font-size:30px;font-weight:700;margin-top:6px;color:var(--ink)}
.stat .value small{font-size:13px;color:var(--muted);font-weight:500}
.stat .accent{height:3px;border-radius:3px;background:var(--teal);width:38px;margin-top:12px}

/* ---------- tables ---------- */
.table-wrap{overflow-x:auto}
table.data{width:100%;border-collapse:collapse;font-size:13px}
table.data th{text-align:left;padding:10px 12px;background:#fafbfc;color:var(--muted);
  font-weight:600;font-size:11.5px;text-transform:uppercase;letter-spacing:.4px;
  border-bottom:1px solid var(--line);white-space:nowrap;position:sticky;top:0}
table.data td{padding:10px 12px;border-bottom:1px solid var(--line);vertical-align:top}
table.data tr:hover td{background:#fafcfd}
table.data td.num,table.data th.num{text-align:right;white-space:nowrap}
.mono{font-variant-numeric:tabular-nums;font-family:"Cascadia Mono",Consolas,monospace}

/* ---------- pills ---------- */
.pill{display:inline-block;padding:2px 10px;border-radius:20px;font-size:11.5px;font-weight:600;white-space:nowrap}
.pill.gray{background:#eef1f5;color:#5b6b7d}
.pill.green{background:#e4f5eb;color:var(--ok)}
.pill.amber{background:#fdf1dc;color:var(--warn)}
.pill.red{background:#fbe6e5;color:var(--danger)}
.pill.blue{background:#e5effb;color:var(--info)}
.pill.teal{background:var(--teal-light);color:var(--teal-dark)}

/* ---------- forms / buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:7px;background:var(--teal);color:#fff;
  border:none;padding:9px 16px;border-radius:8px;font-size:13.5px;font-weight:600;
  cursor:pointer;text-decoration:none}
.btn:hover{background:var(--teal-dark);text-decoration:none;color:#fff}
.btn.ghost{background:#fff;color:var(--ink);border:1px solid var(--line)}
.btn.ghost:hover{background:#f5f7fa;color:var(--ink)}
.btn.sm{padding:5px 11px;font-size:12.5px}
input,select,textarea{font-family:inherit;font-size:13.5px;padding:9px 11px;
  border:1px solid var(--line);border-radius:8px;background:#fff;color:var(--ink);width:100%}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--teal);
  box-shadow:0 0 0 3px rgba(0,179,189,.14)}
.toolbar{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin-bottom:16px}
.toolbar .grow{flex:1;min-width:180px}
label.fld{display:block;margin-bottom:12px}
label.fld span{display:block;font-size:12px;color:var(--muted);margin-bottom:5px;font-weight:600}

.muted{color:var(--muted)}
.right{text-align:right}
.pager{display:flex;gap:6px;align-items:center;margin-top:16px;font-size:13px}
.pager a,.pager span{padding:6px 11px;border:1px solid var(--line);border-radius:7px;background:#fff}
.pager .cur{background:var(--teal);color:#fff;border-color:var(--teal)}

/* ---------- login ---------- */
.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,#0f1b26,#12303a 60%,#00505a)}
.login-card{background:#fff;border-radius:16px;box-shadow:0 20px 60px rgba(0,0,0,.35);
  width:380px;padding:36px 34px}
.login-card .logo{text-align:center;margin-bottom:8px}
.login-card .logo img{height:52px}
.login-card h1{text-align:center;font-size:20px;margin:6px 0 2px}
.login-card .tag{text-align:center;color:var(--muted);font-size:12px;
  letter-spacing:2px;text-transform:uppercase;margin-bottom:24px}
.login-card .btn{width:100%;justify-content:center;margin-top:6px}
.divider{display:flex;align-items:center;gap:12px;color:var(--muted);
  font-size:12px;margin:18px 0}
.divider::before,.divider::after{content:"";flex:1;height:1px;background:var(--line)}
.error{background:#fbe6e5;color:var(--danger);padding:10px 13px;border-radius:8px;
  font-size:13px;margin-bottom:16px}
.hint{background:var(--teal-light);color:var(--teal-dark);padding:10px 13px;
  border-radius:8px;font-size:12px;margin-top:18px;line-height:1.6}

.empty{padding:50px;text-align:center;color:var(--muted)}
h3.sec{font-size:13px;text-transform:uppercase;letter-spacing:.6px;color:var(--muted);
  margin:26px 0 10px}
.kv{display:grid;grid-template-columns:180px 1fr;gap:8px 16px;font-size:13.5px}
.kv dt{color:var(--muted)}
.kv dd{margin:0}